Ƙõnuwa pyrite aka samar a kasashe da dama

Pyrite - da sunan kungiyar na ma'adanai, wanda suke mahadi da karafa daga cikin rukuni na tin, nickel, da baƙin ƙarfe, cobalt, platinum. A mahadi iya zama kamar yadda sulfur da arsenic, kuma antimony-selenium ko.

Calcination pyrite da shawara cewa, da feedstock ne haske a cikin launi, ƙarfe luster, taurin daga 3 zuwa 7. A baƙin ƙarfe ko kuwa baƙin ƙarfe pyrite (FeS2 dabara), kuma aka sani da pyrite, shi ne mai muhimmanci da masana'antu albarkatun kasa daga abin da sulfur dioxide (a samar da Kwayoyin). A bayyanar, da ma'adinai ne wani taro na kananan lu'ulu'u ne na tsari daidai da yellowish-m, a launi da taurin 6-6.5. Abun da ke ciki m pyrite qunshi game da 47 bisa dari na baƙin ƙarfe da kuma game da 53 kashi sulfur.

Calcination pyrites tare da nassi na wani yawan sinadaran halayen, na farko na wanda ya samar da ga fadada daga cikin ma'adinai baƙin ƙarfe sulfide da kuma sulfur a cikin tururi jihar (zafin jiki game da 500 C). Sa'an nan sulfur vapors suna combusted, bada sulfur dioxide, da na baƙin ƙarfe oxide ko sulfide ba gauraye oxide. Cikinsa sulphide ƙone incompletely, kafa "kyandir," wanda zai iya hada fayalite da sauran abubuwa, dangane da impurities a feedstock.

Calcination pyrites iya nuna a cikin gas lokaci wani adadin SO3, admixed da SO2. Wannan abu abubuwa a kan hanya da kayan aiki lalata, saboda haka don rage SO3 gas zazzabi a cikin kanti na makera kayan aiki ya kamata game da 850S, sa'an nan da sauri sauke zuwa 400C.

Ƙõnuwa pyrite aka aikata a cikin kasashe da dama, kamar yadda Wannan abu nasa ne da na kowa. A Rasha, wannan ma'adinai da aka mined a Soymenskoy kasar, Kalitvinskom filin, game da Kushva, Tauhidi, shuke-shuke a cikin Caucasus, a cikin Ryazan da Smolensk yankuna, da kuma a wasu wurare. A} asashen waje, musamman shahara Spanish adibas (musamman Aguas Tenidas inda kayan ba ya dauke da jan karfe, amma yana da mafi girma sulfur abun ciki) ne kara maida su ba kome a cikin ci gaban da Amurka, Faransa, Norway, Sweden. Sulfuric pyrites a cikin yanayi sau da yawa admixed arsenic jinsunan da abu, wanda ya samar da wani sosai cutarwa najasa a samar a cikin sel. Saboda haka, masana'antun kokarin amfani da m raw kayan. Alal misali, Rasha masana'antu a St. Petersburg, aiki a Swedish pyrites.

Roasting na baƙin ƙarfe pyrites (da sulfur) da aka sanya a Tanderu, inda albarkatun kasa da aka ciyar da ta dunƙule ko bututun ƙarfe. Bugu da ari, shi da ya garwaya da taro na m abu wanda yake riga a tara (a fluidized gado a kan grate, a karkashin abin da iska da aka kawota daga ƙasa), bayan da sinadaran halayen faruwa, bada gas (cire) da kuma kyandir (zuba jera musamman bututu). Har ila yau daga cikin gagarumar wuta fiye da kima zafi cire ta ruwa da sanyaya abubuwa.

Calcination pyrite zai zama nasara idan lamba surface tare da iska abinci ne isasshe high. Saboda haka, sau da yawa ma'adinai sarrafa a cikin wani pulverized jihar (a dace Tanderu), a lokacin da barbashi size ne don haka kananan cewa oxygen saukin shiga ciki da taro na abu. Bugu da kari, yawan zafin jiki kula yana da muhimmanci domin ma'adanai a cikin wannan aji sukan sintered a yanayin zafi sama da 900 C. Domin warware wannan matsala ana amfani matsayin aiki kura-iska cakuda, wadda ke bayar da fara kayan don a ƙona hadayu a yanayin zafi har zuwa 1000 C, wanda inganta samar da ya dace.